Denis.Zharkov
a33d9df0cd
Mostly, it only affects FIR It partially allows to consider several variance of constraints like A<Int> & A<T> <: A<X_var> that are mostly brought by smart casts ^KT-49542 Fixed ^KT-50489 Relates
26 lines
611 B
Kotlin
Vendored
26 lines
611 B
Kotlin
Vendored
// SKIP_TXT
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// !DIAGNOSTICS: -UNUSED_VARIABLE
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interface A<E> {
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fun foo(): E
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}
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interface B : A<Int>
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interface C : A<Long>
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fun <T> bar(a: A<T>, w: T) {
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baz(a, w) // OK in FE1.0
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if (a is B) {
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baz(a, 1) // OK in FE1.0
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baz(a, w) // Type mismatch: Required Int, but found E
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<!INFERENCE_UNSUCCESSFUL_FORK("it(B & A<T>) <: A<TypeVariable(F)>")!>baz<!>(a, "")
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}
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if (a is B || a is C) {
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baz(a, w) // OK in FE 1.0 (Smart cast doesn't work), fail at FIR: it infers F to `LBU(Int, Long)` and then `w` is considered inapplicable
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}
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}
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fun <F> baz(a: A<F>, f: F) {}
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